At the moment there are Wolves and badgers in male and female flavours. Only the male ones are a hazard so far. Though they all share the same animation sets.
The game is in the process of getting an update to rewrite, optimise and improve pretty much everything currently in there, and once that's done, the second phase of development should bring in another 2 enemy types as well as a boss. The plan is to add enemy types as development progresses.
I've avoided adding more enemies as I want to overhaul how animations work, and any new enemies or animations would be work that just gets thrown away as soon as the animation system is updated. After that, I intend to go nuts and start adding both.